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http://dx.doi.org/10.6106/KJCEM.2011.12.2.111

BIM Based Time-series Cost Model for Building Projects: Focusing on Construction Material Prices  

Hwang, Sung-Joo (서울대학교 건축학과 대학원)
Park, Moon-Seo (서울대학교 건축학과)
Lee, Hyun-Soo (서울대학교 건축학과)
Kim, Hyun-Soo (서울대학교 건축학과 대학원)
Publication Information
Korean Journal of Construction Engineering and Management / v.12, no.2, 2011 , pp. 111-120 More about this Journal
Abstract
High-rise buildings have recently increased over the residential, commercial and office facilities, thus an understanding of construction cost for high-rise building projects has been a fundamental issue due to enormous construction cost as well as unpredictable market conditions and fluctuations in the rate of inflation by long-term construction periods of high-rise projects. Especially, recent violent fluctuations of construction material prices add to problems in construction cost forecasting. This research, therefore, develops a time-series model with the Box-Jenkins methodologies and material prices time-series data in Korea in order to forecast future trends of unit prices of required materials. BIM (Building Information Modeling) approaches are also used to analyze injection time of construction resources and to conduct quantity takeoff so that total material price can be forecasted. Comparative analysis of Predictability of tentative ARIMA (Autoregressive Integrated Moving Average) models was conducted to determine optimal time-series model for forecasting future price trends. Proposed BIM based time series forecasting model can help to deal with sudden changes in economic conditions by estimating future material prices.
Keywords
Material Price; Time-series Model; ARIMA Model; BIM; Cost Estimating;
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